Window-fastener.



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Patented N0v:15, 1 910.

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A? mm- T. SMITH. WINDOW FASTENER. APPLICATION FILED MA Y 14. 1919.

Patented N0v.15,1910.

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all FFTQ THOMAS TOWSQN SMITH, OF WASHINGTON, DISTRICT OF COLUMBIA.

WINDOW-FASTENER.

To all whom it may concern:

Be it known that I, THOMAS TowsoN SMITH, a citizen of the United States,residing at Vvashington, in the District of Columbia, have inventedcertain new and useful Improvements in Window-Fasteners; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

This invention relates to a window fastener and has for its object toprovide a device particularly designed to fasten a window in a partiallyraised position in such manner that a suflicient amount of ventilationor draft can enter a room either from above or below the window andwhich is so constructed and arranged that the window is locked in suchmanner that the lower sash cannot be raised from the outside nor theupper sash be lowered a suflicient distance to permit ingress to theroom through the window.

While the invention is especially designed to look a window in apartially open position still it may be employed in the capacity of asash fastener to lock two sashes in a closed position.

With this object in view the invention consists in the novelconstruction of the two sections of the lock.

Referring to the accompanying drawing: Figure 1 is an elevation of awindow showing the fastener applied thereto and in operative position.Fig. 2 is a fragmentary view showing a window in elevation andillustrating the fastener in dotted lines in a position in which itwould be placed when employing the same as an ordinary sash lock orfastener. Fig. 3 is a perspective view of the top member of thefastener. Fig. 4 is a perspective view of the bottom member of thefastener. Fig. 5 is a horizontal sectional view taken on line 5-5 ofFig. 1 showing the fastener in locked position.

Like numerals of reference indicate the same parts throughout theseveral figures in which:

1 indicates the upper sash of a window and 2 the lower sash, and it isof course understood that both sashes may have a cen- Specification ofLetters Patent.

Patented Nov. 15, 1910.

Application filed May 14, 1910. Serial No. 561,324.

tral rail 3, or not, according to the size and character of the window,it being immaterial as far as my invention is concerned whether or notthe lock is placed on the center rail or on one of the side rails 4. Asillustrated in the drawing the sashes are shown pro vided with thecenter rails 3, and on the upper surface of the top rail 5 of the lowersash 2 I provide the lower locking member 6, said lower locking member 6comprising a plate 7 which is securely fastened preferably by means ofscrews 8 to the upper rail 5, and upon the center rail 3 of the uppersash 1 I fasten the upper hinged locking member 9 which is preferablysecured by means of screws passing into the rail 3. Referring again tothe lower locking member 6 it will be seen that arranged vertically onthe plate 7 or formed thereon in any suitable manner is a keeper 10,said keeper 10 being provided with a horizontal notch or recess 11, andcarried on the plate 7 is a leaf sprin 12 having a shoulder 13 formednear the fi'ont of the notch or recess 11 for a purpose which will bepresently described.

Referring now to the upper hinged looking member 9 it will be seen thatan arm 14 is hinged at 15 to the plate 9 said arm 14 having an enlargedend or head 16 as shown in Fig. 3. As will appear from the drawing thearm 14 is square in cross section, while the notch 11 and shoulder 13 onthe spring 12 form a recess to receive the arm 14. This arm being squarein cross section the upper hinged member 9 is reversible and can bereversed and applied to either side rail of the upper sash or on eitherside of the central rail.

Having thus described the several parts of my invention its operation isas follows: The two members forming the lock being applied to the sashesas described and the upper locking member 9 being located on the uppersash a sufficient distance above the lower edge of the upper sash as toenable the lower sash 2 to be raised a short distance or to enable theupper sash 1 to be lowered a corresponding distance. When it is desiredto lock the two sashes together in a partially open position either thelower sash 2 is raised or the upper sash l is lowered until the pivotedarm 14 of the upper memher 9 is in line with the notch or recess 11 inthe lower locking member 6. When in this position the hinged arm 14 isswung into the notch 11 which operation causes the arm 14 to engage theleaf spring 12 and depresses the same. When, however, the arm 14 hasentered the notch 11 the spring 12 assumes its normal position and theshoulder 13 thereon raises in front of the arm 14 to lock the said armwithin the notch 11 in the position shown in Fig. 1. When the membersare in a locked position they cannot be accidentally disconnected and itis impossible either to raise the lower sash or to lower the upper sashany greater distance than is provided for by the location of the upperlocking member 9. While the sashes are thus in a locked position boththe upper and the lower sash can be raised or lowered together in suchmanner that a small opening can be provided above the upper sash and acorresponding opening below the lower sash, or the entire amount of theopening can be effected either above the upper sash or below the lowersash according to the convenience of the occupants of the room. When itis desired to unlock the sash the leaf spring 12 is simply depressed byhand and the hinged arm 14: swung out of the notch 11 into positionparallel with the window as shown in dotted lines in Fig. 5, and whenthe said arm is in this position both sashes can be freely raised orlowered in the same manner as if the lock were not applied to thewindow. It will also be observed that this lock permits no projection orprotuberance to interfere with the usual roller shades or curtains, andit will also be noticed that it does not form a clumsy or unsightlyappliance, nor does it interfere in any way with the usual operation ofthe sashes.

As before stated the device can be used in the capacity of a sashfastener to lock or fasten the sash in a closed position. i'Vhenemploying the device in this capacity, however, the upper locking member9 can be applied to the upper sash at the bottom thereof in such mannerthat it will only engage the lower locking member 6 when both sashes areclosed.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent of the United States is A window fastenercomprising two members, the upper member being reversible and comprisinga plate and a hinged portion, said plate being adapted to be applied tothe window sash and to lie vertically thereon, the lower membercomprising a plate, a keeper on said plate under which the hingedportion of the upper member is adapted to pass, and 'a spring disposedon the plate of the lower member adjacent the said keeper to engage thesaid hinged member to hold the same within the said keeper, the saidhinged portion of the upper member being square in cross section in suchmanner that it will enter the said keeper in a reversed position.

In testimony whereof, I aflix my signa ture, in presence of twowitnesses.

THOMAS TOWS ON SMITH.

Witnesses:

C. HUGH DUFFY, HARRY A. HEGARTY.

